Texas, 2002

Flash Flooding in Texas, July 5, 2002

July 5, 2002 · NWS EWX · 4 events in 4 counties and zones

Heavy rain began forming again near midnight from Jourdanton to Hondo and moved northward into Bandera and Kerr Counties. The additional 2 inch rains were sufficient to redevelop flash flooding over the four counties that continued through the morning.

Where it happened

Every event with a place to put it; 4 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
4

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS EWX wrote it up.

Heavy rain began forming again near midnight from Jourdanton to Hondo and moved northward into Bandera and Kerr Counties. The additional 2 inch rains were sufficient to redevelop flash flooding over the four counties that continued through the morning.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Austin/San Antonio, TX wrote its last area forecast discussion before the first event at Jul 4, 7:35 PM CST, 6 hours 55 minutes earlier.

Area forecast discussion, Jul 4, 7:35 PM CST, 6 hours 55 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
835 PM CDT THU JUL 4 2002

FOR THE MOMENT ONLY ISOLD SHOWERS FROM NEAR SAT TO LLANO WITH ALL
FLASH FLOOD WARNINGS EXPIRED.  CONTG TO WATCH CONVECTIVE COMPLEX
TO THE SOUTH WHICH HAS SHOWN SIGNS OF BUILDING TOWARDS THE W AND NW
WHERE STG THETA-E RDG INDICATED BY LAPS AND MID LEVEL MCV MOVG SWD
DOWN THE RIO GRANDE.  LATEST RUC RUNS CONTS TO PRODUCE SIGNIFICANT
PCPN FROM BEXAR COUNTY WWD 06Z/09Z...WHILE 18Z MESO-ETA AND AVN
SHOWING LESSER AMOUNTS TO THE WEST OF SAT.  HOWEVER WITH PWSS NEAR
2 INCHES...AND PAST HISTORY OF PREVIOUS NIGHTS WILL CONT TO LEAN
TOWARD WETTER SOLN WITH PSBL TRAINING STORMS MOVING/BUILDING NWD
INTO THE SRN/S CNTRL CWA OVERNIGHT.  CONTG FFA AS IS WITH NO MAJOR
CHANGES ON UPDATE.  01/03/10/09/23

PREVIOUS DISC...
THE FLASH FLOOD WATCH WILL BE EXTENDED THRU FRIDAY AFTERNOON FOR THE
HILL COUNTRY AND MUCH OF SOUTH CENTRAL TEXAS.

A DANGEROUS FLOODING SITUATION CONTINUES ACROSS THE HILL COUNTRY AND
ADJACENT AREAS OF SOUTH CENTRAL TEXAS AS NUMEROUS STREAMS AND RIVERS
REMAIN IN FLOOD.  ANY ADDITIONAL RAINFALL WILL RESULT IN RAPID RUNOFF
DUE TO SATURATED SOILS.

THE UPPER LEVEL TROF/SHEAR AXIS REMAINS NEARLY STATIONARY FROM NEAR
EL INDIO TO ABILENE...WITH LITTLE CHANGE IN LOCATION EXPECTED OVER
THE NEXT 24 HOURS.  SHOWERS AND THUNDERSTORMS HAVE ONCE AGAIN FIRED
IN THE TROPICAL AIRMASS THANKS TO DAYTIME HEATING.  THESE STORMS
WILL STREAM NORTHWARD AND TRAIN ACROSS THE WATCH AREA THIS AFTERNOON
AND EVENING...GENERALLY EAST OF A LINE FROM HARPER TO SABINAL AND
COTULLA.

THE VORT MAX CURRENTLY LOCATED OVER DEEP SOUTH TEXAS IS FCST BY THE
MESOETA TO MOVE NORTHWARD THIS EVENING AND TONIGHT.  THE RESULT WILL
BE ANOTHER MCS DEVELOPING AND IMPACTING THE FLASH FLOOD WATCH AREA.
MODELS STILL TRY TO DRIFT THIS DISTURBANCE WESTWARD BUT THIS IS HAS
NOT OCCURRED DUE TO THE TRAPPING UPPER RIDGE TO THE NORTH.  IT IS
MORE LIKELY THIS UPPER LEVEL FEATURE WILL SLOWLY WEAKEN AND RAIN
ITSELF OUT.

A QUICK LOOK AT THE EXTENDED MODELS/FCST LOOKS WET.  THE MRF/AVN
SOLUTIONS TRY TO BRING A BACKDOOR FRONT INTO THE HILL COUNTRY BY THE
LATTER HALF OF THE WEEK...BECOMING STATIONARY.

.EWX...FLASH FLOOD WATCH TONIGHT AND FRIDAY FOR THE HILL COUNTRY
       AND MUCH OF SOUTH CENTRAL TEXAS...GENERALLY WEST OF THE
       I-35 CORRIDOR.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

4 flash flood. Local standard time, as filed.

Flash Flood, Bandera

When
July 5, 2:30 AM CST to 12:00 PM CST
Where
Bandera County, Countywide
Reported by
LAW ENFORCEMENT
Coordinates
29.747, -99.246 (the zone’s center; the record gives no point)

General 2 to 3 inch rainfall with totals of up to 5 inches north of Bandera caused the flash flooding to redevelop very quickly across the county and continue through the morning.

Flash Flood, Medina

When
July 5, 2:30 AM CST to 12:00 PM CST
Where
Medina County, Countywide
Reported by
LAW ENFORCEMENT
Coordinates
29.356, -99.110 (the zone’s center; the record gives no point)

Rainfall averaging around 2 inches fell just west of Medina Lake and produced a resurgence of flash flooding through the morning hours. The increase in rain totals raise concerns that the additional inflow into Medina Dam could overtop the structure. Questions were raised as to the stability of the structure, and, as a result, an evacuation was ordered for communities immediately below the Dam. More than 4,000 persons were evacuated Friday evening after having just returned on Thursday from a previous evacuation.

Flash Flood, Kerr

When
July 5, 3:00 AM CST to 7:00 PM CST
Where
Kerr County, Southeast Portion
Reported by
LAW ENFORCEMENT
Coordinates
30.062, -99.350 (the zone’s center; the record gives no point)

Additional rainfall over the southeast part of Kerr County averaged 1 to 2 inches. This accumulation, added to the flooding already present in all county streams and creeks, caused flash flooding to continue through the late afternoon.

Flash Flood, Atascosa

When
July 5, 3:00 AM CST to 10:00 AM CST
Where
Atascosa County, Countywide
Reported by
LAW ENFORCEMENT
Coordinates
28.894, -98.527 (the zone’s center; the record gives no point)

An additional 1 to 2 inches of rain, added to the accumulations from the previous several days, cause flash flooding over low water crossings through most of the morning.

What these are

Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Texas in 2002Every state in 2002This day in weather historyWarnings in Texas, July 2002

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5312258, 5312259, 5306771, 5312260.